TW has family issues. Who doesn't? If anything, I would probably help the siblings to keep them outta the news and running their mouths - hush money.
It does not look good for TW to have a foundation helping children, but not bothering to help his family. Whatever the reason, he does not need that type of publicity. Dunno what happened in that family, but you hate to see family members, especially siblings, not getting along with each other.